Ubuntu 13.04 USN-1987-1 Critical: GnuPG Denial Of Service

ubuntu

October 9, 2013

Several security issues were fixed in GnuPG.

Summary

Several security issues were fixed in GnuPG.

Software Description:

- gnupg: GNU privacy guard - a free PGP replacement

- gnupg2: GNU privacy guard - a free PGP replacement

Details:

Daniel Kahn Gillmor discovered that GnuPG treated keys with empty usage

flags as being valid for all usages. (CVE-2013-4351)

Taylor R Campbell discovered that GnuPG incorrectly handled certain OpenPGP

messages. If a user or automated system were tricked into processing a

specially-crafted message, GnuPG could consume resources, resulting in a

denial of service. (CVE-2013-4402)

Topics Covered

security advisory denial of service security issue gnupg Ubuntu

Update Instructions

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 13.04:
  gnupg                           1.4.12-7ubuntu1.2
  gnupg2                          2.0.19-2ubuntu1.1

Ubuntu 12.10:
  gnupg                           1.4.11-3ubuntu4.3
  gnupg2                          2.0.17-2ubuntu3.2

Ubuntu 12.04 LTS:
  gnupg                           1.4.11-3ubuntu2.4
  gnupg2                          2.0.17-2ubuntu2.12.04.3

Ubuntu 10.04 LTS:
  gnupg                           1.4.10-2ubuntu1.4
  gnupg2                          2.0.14-1ubuntu1.6

In general, a standard system update will make all the necessary changes.